[BITList] drilling

[CT's]

hugh
In regards to gas intrained in drilling mud while drilling or completing a well, I believe it is sent to a mud-vacumn degasser where it is vented a safe distance from the rig to the atmosphere, not burned. 
We are talking about small quantities (500 parts per million) and nothing remotely economically viable.
The gas being vented and ignited in a production platform scenario is residual gas from the well being used to power different systems on the rig. The other situation is poisonous gas (H2S) being vented and ignited.
ct


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From: "HUGH" <chakdara at btinternet.com>
Sent: Friday, May 14, 2010 9:41 AM
To: <bitlist at lists.bcn.mythic-beasts.com>
Subject: Re: [BITList] Al Jazeera English - Americas - Pipe plan to tackleUSoil spill

> Mike,
> 
> A nice summary, short on asinine guesswork.   I read - "One of the main 
> questions is why BP or Transocean decided to proceed with final operations 
> to seal the well despite a test that apparently indicated highly combustible 
> gas could still be leaking out."  I seem to recollect gas from the 
> processing of the mud is often present, and is ignited at the top of the 
> derrick - we've all seen the flares on TV.  I've no idea if gas encountered 
> otherwise, eg, the apparent stuff mentioned by Al Jazeera, is dealt with in 
> that way routinely - I'd guess not, given the uncertainty of the supply 
> conditions.  Could be the problem stemmed from that area.  What do they do 
> when they're drilling for gas?
> 
> Hugh. 
> 
> 
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